[V8] well lets beat this brake acumulator to death again

[dsaad at icehouse.net]

WAG O THE DAY:

I can't quite imagine how the brake section could fail completly - but as I
recall, this is a plunger type pump - so maybe one of the poppet valves under
the X caps is stuck open? If this is true then either some junk is floating
around in the system and got stuck in the valve or the valve just failed.
Neither seems likely to me but the thing to do is pull the pump and tear it
down. What you find there will dictate the next step.

If a line is plugged, it would have to be a serious plug. I think this pump
makes around 3000 to 5000 PSI.

What about the brake servo? How does that work?


Dave


Quoting R Broberg <rbroberg at wi.rr.com>:

> My recollection is that the pump provides two separate services. One higher
> pressure than the other, for brakes and steering.  Presumably, one can fail
> without the other.
> Roland
>
> Roland Broberg
> Broberg Engineering-BECO
> Delafield. Wisconsin USA
> ----- Original Message -----
> From: "Kneale Brownson" <knotnook at traverse.com>
> To: <readytow at earthlink.net>; <v8 at audifans.com>
> Sent: Monday, March 14, 2005 4:25 AM
> Subject: Re: [V8] well lets beat this brake acumulator to death again
>
>
> > Sounds like either the pump's internal plumbing or the hose to the
> > accumulator is plugged somehow.  You might check the banjo bolt for the
> > bomb hose to see if it has a screen plugged.
> >
> > At 07:09 PM 3/13/2005 -0800, kevin kyzar wrote:
> > >to all who answered, thank you. in respones to your questions, the power
> > >steering works fine, the vehicle had been idled w/o the belt installed.
> but
> > >the belt is now installed.  i pulled the "X" plugs on the front of the
> pump
> > >and verified the eccentrics in the pump are moving.  but still nothing on
> > >the brakes.  and with the belt installed, and the motor idling, no fluid
> > >from the pump to the bomb.  I'm stumped!
> >
> > _______________________________________________
> > Audifans V8 mailing list
> > Send posts to: mailto:V8 at audifans.com
> > Manage your list connection: http://www.audifans.com/mailman/listinfo/v8
> > Have an Audi V8 question?  Check the Audifans Knowledgebase!
> > http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/V8
> > Have a V8 answer? ... Please help others by adding to the KB ... all
> contributions welcome!
> >
>
>
> _______________________________________________
> Audifans V8 mailing list
> Send posts to: mailto:V8 at audifans.com
> Manage your list connection: http://www.audifans.com/mailman/listinfo/v8
> Have an Audi V8 question?  Check the Audifans Knowledgebase!
> http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/V8
> Have a V8 answer? ... Please help others by adding to the KB ... all
> contributions welcome!
>